Fan



FIG. 1 is a bottom perspective view of the fan;

FIG. 2 is a top perspective view of the fan;

FIG. 3 is a front view of the fan;

FIG. 4 is a right side view of the fan;

FIG. 5 is a rear view of the fan;

FIG. 6 is a left side view of the fan; and,

FIG. 7 is a top view of the fan.

The broken lines shown in the drawings illustrate the fan that form nopart of the claimed design.

CLAIM The ornamental design for a fan, as shown and described.